SOLUTION: What is 9+10? All of my friends are saying it and laughing that it is 21. But, I am good at math and I know that they are wrong. However, my friends seem very sure of themselves. P

Question 1064283: What is 9+10? All of my friends are saying it and laughing that it is 21. But, I am good at math and I know that they are wrong. However, my friends seem very sure of themselves. Please, please, I need some help to have evidence that I am right. I am also not very good at the language English and that is also why they laugh at me. Please help!
Answer by ikleyn(52875) (Show Source): You can put this solution on YOUR website!
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Use fingers on your hands and your legs and count.

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